4th edition Verified Test Bank Chapter.3 Chemistry Of Life - Laboratory Manual Anatomy & Physiology Cat 4e Test Bank by Terry Martin. DOCX document preview.
Lab Manual for Human Anatomy and Physiology, 4e (Martin)
Chapter 3 Chemistry of Life
1) The smallest unit of any element is a(n) ________.
A) molecule
B) compound
C) macromolecule
D) atom
E) electron
2) Human blood has a pH of 7.4; therefore, it can be classified as a ________.
A) weak acid
B) strong base
C) strong acid
D) neutral solution
E) weak base
3) Acids have a pH of <7.0, and they contain a higher concentration of H+ ions than OH- ions.
4) In the iodine (IKI) test, a blue-black color indicates that
A) proteins have been broken down.
B) starch has not been broken down.
C) lipids have not been broken down.
D) starch has been broken down.
E) proteins have not been broken down.
5) If Biuret reagent is added to a solution, and it reacts to produce a pink to purple color, this indicates the presence of ________ in the solution.
A) lipids
B) glucose
C) protein
D) cholesterol
E) starch
6) All of the following are true of lipids, except
A) amino acids are a type of lipid.
B) some lipids are used for cellular structure.
C) triglycerides are also called fats.
D) lipids provide some cellular energy.
E) phospholipids are a type of lipid.
7) Carbohydrates, lipids, and proteins are all classified as organic molecules.
8) A solution that has a high concentration of hydroxide (OH-) ions
A) has a low pH.
B) has a high concentration of hydrogen (H+) ions too.
C) is a basic (alkaline) solution.
D) is a neutral solution.
E) is an acidic solution.
9) There is a ________ difference between a pH of 5 and a pH of 6.
A) 10x
B) 2x
C) 5x
D) 100x
E) 50x
10) The building blocks of many lipids include
A) amino acids.
B) monosaccharides.
C) polypeptides.
D) fatty acids and glycerol.
E) polysaccharides.
11) In Benedict's test, the greatest amount of sugar is indicated by a ________ color.
A) blue
B) yellow
C) green
D) brown
E) red
12) Sudan IV dye is a test for proteins.
13) Many plant pigments can be used as colorimetric tests for changes in ________.
A) temperature
B) carbohydrate concentration
C) pH
D) water purity
E) sodium ion (Na+) concentration
14) Although the pH of the blood is 7.4, our cells can function well within a pH range of 3.0–11.0.
15) All of the following are true about the cabbage water tests, except
A) red cabbage contains a pigment that functions as a colorimetric pH indicator.
B) distilled water is used in this experiment as an example of a neutral substance.
C) vinegar is added to one of the test tubes as an example of an acidic substance.
D) baking soda is used in this experiment as an example of a basic substance.
E) All of the choices are correct.
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Laboratory Manual Anatomy & Physiology Cat 4e Test Bank
By Terry Martin